Home / 18,231.30-27,286.20-13,219.43

Finding the Fourth Proportional to 18,231.30, 27,286.20 and 13,219.43

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Solution

The fourth proportional to 18,231.30, 27,286.20 and 13,219.43 is: 19,785.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,231.30 : 27,286.20 = 13,219.43 : x
  2. Step 2: Convert to fraction form
    18,231.30/27,286.20 = 13,219.43/x
  3. Step 3: Cross multiply
    18,231.30x = 27,286.20 × 13,219.43
  4. Step 4: Simplify right side
    18,231.30x = 360,707,874.44
  5. Step 5: Solve for x
    x = 360,707,874.44/18,231.30
  6. Step 6: Final answer
    x = 19,785.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.